	function databtn(){
			var searchtime = document.getElementById("datavalue").value;
			var LIb = document.getElementById("libname").innerHTML;
			var usingtb = document.getElementById("usinginfotb");
			if(typeof(searchtime)!="undefined")
			{$.ajax({
	            url: 'Search_usinginfo',
	            data: {"strs": searchtime,"lib":LIb},
	            dataType: 'json',
	            type: 'GET',
	            success: function (jsondata) {
	            	console.log(jsondata);
	            usingtb.innerHTML="";
	            creatusingtable(jsondata, usingtb);
	            }
	        })
			}
		}